. >> reporter: for the rivals, it came down to service. >> president obama asked me to be secretary of state. and i said yes. why did he ask me? and why did i say yes? because we both love our country. >> david, there's been a lot of speculation about whether hillary will run for president in 2016. possibly against the current vice president, joe biden. does this interview mean biden is picking sides here? >> reporter: you can't even say thank you in this town without a lot of political intrigue coming along with it. it wasn't an endorsement for 2016? or is he trying to say thank you through her for bill clinton for all he did at the end of the campaign, just a few months ago, getting out there and pushing for him. we don't know the answers to that. but we continue to ask those questions over the next three-plus years or two-plus years and we're in the middle of another campaign, dan. >> that's the way it goes. >>> we turn, now, to wall street's big role in the new year. the dow closed at its highest level since october 2007, before the economic collapse. the dow is now less than 300 p